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<meta name="description" content="这里只列举一些使用比率较高的常用CSS Hack，且不考虑IE6以下的版本。若对其它更多Hack有兴趣，可Google或Baidu。 条件Hack语法:    123&amp;lt;!--[if &amp;lt;keywords&amp;gt;? IE &amp;lt;version&amp;gt;?]&amp;gt;HTML代码块&amp;lt;![endif]--&amp;gt; 取值:&amp;lt;keywords&amp;gt; if条件共包含6种选择方式：是否、大">
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        <p>这里只列举一些使用比率较高的常用CSS Hack，且不考虑IE6以下的版本。若对其它更多Hack有兴趣，可Google或Baidu。</p>
<h2 id="条件Hack"><a href="#条件Hack" class="headerlink" title="条件Hack"></a>条件Hack</h2><p>语法:   </p>
<figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">&lt;!--[if &lt;keywords&gt;? IE &lt;version&gt;?]&gt;</span></span><br><span class="line"><span class="comment">HTML代码块</span></span><br><span class="line"><span class="comment">&lt;![endif]--&gt;</span></span><br></pre></td></tr></table></figure>
<p>取值:<br><code>&lt;keywords&gt;</code></p>
<p>if条件共包含6种选择方式：是否、大于、大于或等于、小于、小于或等于、非指定版本</p>
<ul>
<li>是否：指定是否IE或IE某个版本。关键字：空</li>
<li>大于：选择大于指定版本的IE版本。关键字：gt（greater than）</li>
<li>大于或等于：选择大于或等于指定版本的IE版本。关键字：gte（greater than or equal）</li>
<li>小于：选择小于指定版本的IE版本。关键字：lt（less than）</li>
<li>小于或等于：选择小于或等于指定版本的IE版本。关键字：lte（less than or equal）</li>
<li>非指定版本：选择除指定版本外的所有IE版本。关键字：!</li>
</ul>
<p><code>&lt;version&gt;</code></p>
<p>目前的常用IE版本为6.0及以上，推荐酌情忽略低版本，把精力花在为使用高级浏览器的用户提供更好的体验上<br>IE10及以上版本已将条件注释特性移除，使用时需注意。</p>
<p>说明:<br>用于选择IE浏览器及IE的不同版本<br>if条件Hack是HTML级别的（包含但不仅是CSS的Hack，可以选择任何HTML代码块）  </p>
<p>实例:    </p>
<figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">&lt;!--[if IE]&gt;</span></span><br><span class="line"><span class="comment">&lt;p&gt;你在非IE中将看不到我的身影&lt;/p&gt;</span></span><br><span class="line"><span class="comment">&lt;![endif]--&gt;</span></span><br></pre></td></tr></table></figure>
<figure class="highlight javascript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line">&lt;!--[<span class="keyword">if</span> gt IE <span class="number">6</span>]&gt;</span><br><span class="line">&lt;style&gt;</span><br><span class="line">.test&#123;<span class="attr">color</span>:red;&#125;</span><br><span class="line">&lt;<span class="regexp">/style&gt;</span></span><br><span class="line"><span class="regexp">&lt;![endif]--&gt;</span></span><br></pre></td></tr></table></figure>
<h2 id="属性级Hack"><a href="#属性级Hack" class="headerlink" title="属性级Hack"></a>属性级Hack</h2><p>语法：</p>
<p><code>selector{&lt;hack&gt;?property:value&lt;hack&gt;?;}</code></p>
<p>取值：</p>
<ul>
<li><code>_</code>：选择IE6及以下。连接线（中划线）（-）亦可使用，为了避免与某些带中划线的属性混淆，所以使用下划线（_)更为合适。</li>
<li><code>*</code>：选择IE7及以下。诸如：（+）与（#）之类的均可使用，不过业界对（*）的认知度更高</li>
<li><code>\9</code>：选择IE6+</li>
<li><code>\0</code>：选择IE8+和Opera15以下的浏览器</li>
</ul>
<p>说明：</p>
<p>选择不同的浏览器及版本<br>尽可能减少对CSS Hack的使用。Hack有风险，使用需谨慎<br>通常如未作特别说明，本文档所有的代码和示例的默认运行环境都为标准模式。  </p>
<p>实例:</p>
<figure class="highlight scss"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"><span class="selector-class">.test</span> &#123;</span><br><span class="line">	<span class="attribute">color</span>: <span class="number">#090</span>\<span class="number">9</span>; <span class="comment">/* For IE8+ */</span></span><br><span class="line">	*<span class="attribute">color</span>: <span class="number">#f00</span>;  <span class="comment">/* For IE7 and earlier */</span></span><br><span class="line">	_color: <span class="number">#ff0</span>;  <span class="comment">/* For IE6 and earlier */</span></span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
<h2 id="选择符级Hack"><a href="#选择符级Hack" class="headerlink" title="选择符级Hack"></a>选择符级Hack</h2><p>语法:</p>
<p><code>&lt;hack&gt; selector{ sRules }</code></p>
<p>说明：<br>选择不同的浏览器及版本<br>尽可能减少对CSS Hack的使用。Hack有风险，使用需谨慎<br>通常如未作特别说明，本文档所有的代码和示例的默认运行环境都为标准模式。<br>一些CSS Hack由于浏览器存在交叉认识，所以需要通过层层覆盖的方式来实现对不同浏览器进行Hack的。  </p>
<p>实例:</p>
<figure class="highlight css"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line">* <span class="selector-tag">html</span> <span class="selector-class">.test</span> &#123; <span class="attribute">color</span>: <span class="number">#090</span>; &#125;       <span class="comment">/* For IE6 and earlier */</span></span><br><span class="line">* + <span class="selector-tag">html</span> <span class="selector-class">.test</span> &#123; <span class="attribute">color</span>: <span class="number">#ff0</span>; &#125;     <span class="comment">/* For IE7 */</span></span><br><span class="line"><span class="selector-class">.test</span><span class="selector-pseudo">:lang(zh-cmn-Hans)</span> &#123; <span class="attribute">color</span>: <span class="number">#f00</span>; &#125;  <span class="comment">/* For IE8+ and not IE */</span></span><br><span class="line"><span class="selector-class">.test</span><span class="selector-pseudo">:nth-child(1)</span> &#123; <span class="attribute">color</span>: <span class="number">#0ff</span>; &#125; <span class="comment">/* For IE9+ and not IE */</span></span><br></pre></td></tr></table></figure>

      
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